Vibration analysis of multi-DIM vibration absorber based on parallel mechanism

Xiaoqin Yin, Qizhi Yang, Jun Xie, P. Bao
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引用次数: 2

Abstract

An originality multi-DIM vibration absorption device with single-layer is presented. It uses the parallel mechanism as the main mechanism, associating elastic damping system with the primary component of mechanism. So energy absorption and power adaptive balance can be realized. The vibration analysis of multi-DIM vibration absorber system is done using Lagrange equation. Due to the mass matrix M and the stiffness matrix K of system are the function of the mechanism's position, so it is a complex nonlinear system. It's very difficult to solve exactly for the system. But the natural frequency and modal of system are obtained approximately for the micro-vibration system that the elastic potential energy is more than the gravity potential energy, because the mass matrix M and the stiffness matrix K of the equilibrium location are constant matrix. The calculated result is near to its simulation, so the method can reflect the system's vibration characteristics under the equilibrium state.
基于并联机构的多dim吸振器振动分析
提出了一种新颖的单层多dim吸振装置。采用并联机构作为主机构,将弹性阻尼系统与机构的主要组成部分联系起来。从而实现能量吸收和功率自适应平衡。利用拉格朗日方程对多dim减振器系统进行了振动分析。由于系统的质量矩阵M和刚度矩阵K是机构位置的函数,因此它是一个复杂的非线性系统。很难精确地解出这个方程组。但对于弹性势能大于重力势能的微振动系统,由于平衡位置的质量矩阵M和刚度矩阵K为常数矩阵,可以近似地求得系统的固有频率和模态。计算结果与仿真结果较为接近,能较好地反映系统在平衡状态下的振动特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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